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Africa: Senegal, Gambia, Casamance, Corubal, Geba, Little Scarcies, Sassandra, Boubo, Bandama, Agnébi, Mé, Comoé, Tano, Pra, Volta basin, Mono, Sio, Ouémé, Ogun, entire Niger and Chad basins, Cross, Wouri and Sanaga; absent between Little Scarcies and Sassandra; further in the entire Congo River basin, Malagarasi, Luiche, Cunene, Okavango, entire Zambezi including the Kafue system, Lake Kariba, Nile, Lake Victoria basin, Webi Shebeli, Wando, Tana, Galana, Athi, Wami, Rufiji-Ruaha, Lake Rukwa, lower Sabi-Lundi, Shire below Murchison Falls, Lake Chilwa, Ruvu, Pungwe, Limpopo, Incomati and Pongola (Ref. 43912). |